72661026 has 32 divisors (see below), whose sum is σ = 154709568. Its totient is φ = 22671360.

The previous prime is 72661003. The next prime is 72661063. The reversal of 72661026 is 62016627.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 72660984 and 72661002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17841 + ... + 21531.

It is an arithmetic number, because the mean of its divisors is an integer number (4834674).

Almost surely, 2^72661026 is an apocalyptic number.

72661026 is an abundant number, since it is smaller than the sum of its proper divisors (82048542).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72661026 is a wasteful number, since it uses less digits than its factorization.

72661026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3906.

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 72661026 is about 8524.1437106609. The cubic root of 72661026 is about 417.2860265855.

The spelling of 72661026 in words is "seventy-two million, six hundred sixty-one thousand, twenty-six".